Problem with Gears of War Black_Box instalation…

hi. i have problem with gears of war black_box instalation. can anyone help me? size of downloaded game is 3.6 GB, but when i start instalation game request only 4.1 MB. why?
Screen
http://www.dodaj.rs/f/2Y/3n/4NH4W5FB/gow.jpg
Answer #1
It shows wrong information, but it works, I don’t know why. Post installation size = 9.19 GB. Don’t forget to create a desktop shortcut and always launch from desktop.
Answer #2
Install it that way and give it a go.
Answer #3
i don’t understand this language but understand some of this words and general problem is with unpacking. installation takes a few seconds and instaled directory don’t exist. here ss:

Answer #4
Did you disable your AV…..
Disable it then run install again….
Answer #5
mount iso copy all contains in your hdd , disable your AV and setup from HDD manually.